Barack Obama logged exactly 143 days of experience in the U.S. Senate before setting his sights on winning the White House.

Obama was sworn in as a senator on Jan. 4, 2005, and he announced that he was forming a presidential exploratory committee on Jan. 16, 2007. In that interval, the Senate was in session and working for 143 days, according to GOPUSA’s blog The Loft.

That’s the equivalent of less than 21 seven-day weeks.

“After 143 days of work experience, Obama believed he was ready to be commander in chief, leader of the free world, and fill the shoes of Abraham Lincoln, FDR, JFK and Ronald Reagan,” Cheri Jacobus writes on the blog.

In contrast, presidential rival John McCain’s resume includes 26 years in Congress and 22 years of military service, including his 1,966 days as a POW in Vietnam.